(1)Pilot, 试点的，试验的

       pilot program,

(2) Desperate times call for desperate measures. 时势逼人。

(3) laid back, 随意的，慵懒的

     He's not laid back. 他不是随意的人。

(4) scum, 糟粕，社会渣

     All the people I deal with are scum.